Fill a medium pot (or large for 4 servings) 3/4 of the way up with water; cover and heat to boiling on high. Wash and dry the fresh produce. Cut the mushrooms into bite-sized pieces. Cut off and discard the root ends of the bok choy; thinly slice crosswise. In a bowl, whisk together the vinegar, hoisin sauce, soy sauce, 1 tablespoon of water (or 2 tablespoons for 4 servings), and as much of the sambal oelek as you’d like, depending on how spicy you’d like the dish to be.

In a large nonstick pan, heat a drizzle of olive oil on medium-high until hot. Crack the eggs into the pan, keeping them separate; season with salt and pepper. Cook 4 to 5 minutes, or until the whites are set and the yolks are cooked to your desired degree of doneness. Transfer to a plate; cover with foil to keep warm. Wipe out the pan.

In the same pan, heat a drizzle of olive oil on medium-high until hot. Add the beef; season with salt and pepper. Cook, stirring frequently and breaking the meat apart with a spoon, 5 to 7 minutes, or until browned and cooked through. Carefully drain off and discard any excess oil. Leaving any browned bits (or fond) in the pan, transfer to a plate.

In the same pan, heat a drizzle of olive oil on medium-high until hot. Add the mushroom pieces in an even layer. Cook, without stirring, 3 to 4 minutes, or until lightly browned. Add the sliced bok choy and sautéed aromatics (carefully, as the liquid may splatter); season with salt and pepper. Cook, stirring occasionally, 1 to 2 minutes, or until the bok choy stems are softened and the leaves are wilted. Turn off the heat.

Meanwhile, add the noodles to the pot of boiling water, stirring gently to separate. Cook, stirring occasionally, 3 to 5 minutes, or until tender. Turn off the heat. Drain thoroughly and rinse under warm water 30 seconds to 1 minute to prevent sticking. Return to the pot.

To the pot of cooked noodles, add the cooked vegetables, cooked beef, and sauce. Cook on medium-high, stirring occasionally, 1 to 2 minutes, or until thoroughly combined. Turn off the heat. Taste, then season with salt and pepper if desired. Serve the finished noodles topped with the fried eggs. Garnish with the sesame seeds. Enjoy!